Numerical analysis of deterioration phenomena in heat transfer to supercritical water

S. Koshizuka, N. Takano, Y. Oka

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Abstract

Deterioration in heat transfer at supercritical water cooling in a vertical pipe is numerically analyzed. The calculation is based on a parabolic solver for steady-state equations in r-z two dimensions, a k-ε{lunate} model for turbulence and a steam table library for physical properties of supercritical water. Calculation results agree with the experimental data of Yamagata et al. It is found that heat transfer deterioration is caused by two mechanisms depending on the flow rate. When the heat flux is increased much above the deterioration heat flux, a violent oscillation is observed in the temperature distribution.

Original languageEnglish
Pages (from-to)3077-3084
Number of pages8
JournalInternational Journal of Heat and Mass Transfer
Volume38
Issue number16
DOIs
Publication statusPublished - 1995 Nov

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ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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